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Ms. Jones installs and demonstrates smoke detectors. There are two types of smoke detectors, type A and Type B. Type A requires 1 hour to install and 1/3 hour to demonstrate. Type B requires 1.5 hours to install and 1/5 hour to demonstrate. Company rules require Ms. Jones to work a minimum of 20 hours as an installer and a maximum of 15 hours a week as a demonstrator. She earns $8 per hour as an installer and $5 per hour as a demonstrator. How many of each type of alarm should she install and demonstrate to maximize her income?
If a gas occupies 22.2L at 825mmHg and 35 degree C, what pressure will it exert at 18.2L and -11 degree C
What factors might inhibit Human Resources department managers from developing a strategic planning approach to training? How might these factors be overcome?
What ions, atoms, or molecules are present after the following substances mix with water. (Do not forget solubility rules). a. LiOH b. O2 c. Mg(NO3)2
sodium metal reacts violently with water to form naoh and release hydrogen gas. suppose that 10.0g of na react
How many grams of NH3 can be produced from the reaction of 28 grams of N2 and 25 g of H2
what are the names of the quantity measured by each of seven SI base units and the SI symbols of the unit?
What evidence do you have that your product consists of a single geometric isomer or is a mixture of isomers? Does the melting point give such information
Problem- There is a solution that is 3.8 x 10^-2 M in HCN (Ka = 4.9 x 10^-10) and 1 x 10^-2 M NaCN. Calculate the concentrations of all species present in the solution.
For each of the subsequent state a balanced chemical equation to represent the dissociation of the compound when it is dissolved in water. If the compound wouldn't dissociate write NRX.
Mercury has the density of 13.6 g/cm3. what is the mass of a cylinder of mercury with a tube with an inside diameter of .45 cm and a height of 76.0 cm
What mass of water is necessary to prepare each of the following solutions? 1.) 200.0g of 1.30\% saline solution 2.) 80.00g of 15.0\% sugar solution
Arsenic acid (H3AsO4) is a triprotic acid with a Ka1=5E-3 Ka2=8E-8 and Ka3=6E-10. calculate [H+], [OH-], [H3AsO4], [H2AsO4-][HAsO4 2-], and [AsO4 3-] in a 0.20 M arsenic acid solution.
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